.header a{
    color: #000;
}
.commonWidth{
    width: 1200px;
    margin: 0 auto;
}
.header .head ul li:nth-child(3) .line {
    display: block;
  }

.bg{
    margin-top: 100px;
    margin-bottom: 100px;
    margin: 0 auto;
    width: 100%;
    height: 600px;
    background: url(../images/4chain_banner.jpg) no-repeat;
    background-size: 100% 100%;
    background-color: #bfbfbf;
}

.bg .head{
    position: relative;
}

.chain_service{
    position: absolute;
    top: 399px;
    left: 10px;
    width: 247px;
	height: 163px;
	background-color: #d22234;
	color: #ffffff;
    padding: 43px 60px 42px 43px;
}
.chain_service div:nth-child(2){
    margin-top: 12px;
}
  /* 服务选项部分 */
.titlecheck{
    margin-top: 205px;
    margin-bottom: 100px;
}

.titlecheck .t_select {
    border-bottom: 1px solid silver;
}

.titlecheck .t_select div{
    border-bottom: 7px solid transparent;
    float: left;
    width: 120px;
    height: 36px;
    margin-right: 79px;
    padding: 15px 0px;
}

.titlecheck .t_select div a{
    color: #000;
}
.titlecheck .t_select div a p{
font-size: 30px;
/* line-height: 36px; */
}
.titlecheck .t_select div:first-child{
    margin-left: 142px;
}
.titlecheck .t_select div:nth-child(2){
border-bottom: 7px solid red;

}
.titlecheck .t_select div:hover{
border-bottom: 7px solid red;
}

/* show部分 */

.show{
    height: 589px;
    /* background-color: yellow; */
}

.show .show_redbg{
    position: relative;
    margin-right: 180px;
    float: left;
    width: 220px;
	height: 130px;
	background-color: #d22234;
}

.show .show_item{
    overflow: hidden;
    float: left;
    margin-top: 8px;
    width: 380px;
	height: 260px;
	background-color: #000000;
	border: solid 1px #ffffff;
    /* margin-right: px; */
    transition: 1s;
   
}

.show .show_item img{
   
    width: 100%;
    height: 100%;
    transition: 1s;
}

.show .show_item:nth-child(1){
    position: absolute;
    left: 12px;
}

.show .show_item .shadow{
    position: absolute;
    left: 0;
    top: 0;
    width: 380px;
	height: 260px;
    background-color: #03afff3a;
}
.show .show_item:hover .shadow{
    display: none;
}
.show .show_item:hover{
    overflow: hidden;
}
.show .show_item:hover .shadow{
    transform: scale(1.1);
}
.show .show_item:hover .show_text{
    display: none;
}

.show .show_item:hover img{
    transform: scale(1.1);
}
.show_redbg .show_text,.show_bg .show_text{
    color: white;
    text-align: center;
    padding: 17px 21px 44px 20px;
    top:200px;
    left: 70px;
    position: absolute;
    width: 193px;
	height: 150px;
	background-color: #d22234;
}
.show_item .show_text div:nth-child(2){
    margin-top: 28px;
}
.show .show_item:nth-child(3){
    margin-right: 0px;
}
.show_bg{
    position: relative;
    float: left;
    width: 280px;
	height: 160px;
    margin-right: 120px;
}
.show_bg:nth-child(3){
    margin-right: 0px;
}
/*服务优势部分*/
.adv{
    margin: 5px auto 150px;
    /* height: 589px; */
}
.adv .adv_title{
    margin-bottom: 97px;
}
.adv .details{
    display: flex;
    justify-content: space-between;
}
/* 具体优势展示 */
.adv .details div{
    color: white;
    text-align: center;
    width: 387px;
	height: 230px;
	background-color: #d22234; 
    transition: 1s;
}

.adv .details:nth-child(1) img{
    width: 82px;
	height: 70px;
    margin: 14px 152px 21px 153px;
}
.adv .details:nth-child(2)  img{
    width: 69px;
    height: 69px;
    margin: 36px 179px 20px;
}
.adv .details:nth-child(3)  img{
    width: 73px;
    height: 73px;
    margin: 30px 177px 23px;
}
.adv .details div:hover{
    transform: translateY(-10px);
    box-shadow: 3px 3px 20px red;
    
}